78020540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{563}}^1$

素因数の和:639

約数の個数: 72

約数和(自身を含む): 182065968

約数和(自身を除く): 104045428

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 169, 205, 260, 338, 410, 533, 563, 676, 820, 845, 1066, 1126, 1690, 2132, 2252, 2665, 2815, 3380, 5330, 5630, 6929, 7319, 10660, 11260, 13858, 14638, 23083, 27716, 29276, 34645, 36595, 46166, 69290, 73190, 92332, 95147, 115415, 138580, 146380, 190294, 230830, 300079, 380588, 461660, 475735, 600158, 951470, 1200316, 1500395, 1902940, 3000790, 3901027, 6001580, 7802054, 15604108, 19505135, 39010270, 78020540]

約数ペア:

[(1, 78020540), (2, 39010270), (4, 19505135), (5, 15604108), (10, 7802054), (13, 6001580), (20, 3901027), (26, 3000790), (41, 1902940), (52, 1500395), (65, 1200316), (82, 951470), (130, 600158), (164, 475735), (169, 461660), (205, 380588), (260, 300079), (338, 230830), (410, 190294), (533, 146380), (563, 138580), (676, 115415), (820, 95147), (845, 92332), (1066, 73190), (1126, 69290), (1690, 46166), (2132, 36595), (2252, 34645), (2665, 29276), (2815, 27716), (3380, 23083), (5330, 14638), (5630, 13858), (6929, 11260), (7319, 10660)]